/Engine/Plugins/FX/Niagara/Source/NiagaraEditor/Public/NiagaraParameterMapHistory.h
Does this parameter contain the "Previous" namespace as one of its intermediate namespaces? If so, remove the "Previous" namespace and return the original value.
namespace FNiagaraParameterUtilities { [FName](API\Runtime\Core\UObject\FName) FNiagaraParameterUtilities::GetSourceForPreviousValue ( const [FName](API\Runtime\Core\UObject\FName) & InVariableName ) }